US1547767A - Oil stove - Google Patents

Description

July 28, 1925. v 1,547,767

I e. H. LENNON 011. STOVE Filed Feb, 1:5, 1925 Patented July 28, 1925, V

UNITED STATES PATENT QF'FICE.

e oneE H. ennon, 0F BALTIMORE, MARYLAND, A-SSIGNOR o NATIONAL ENAMEL.-

mean]; sm rme CO'MLPANY, or NEW roan,

on, STOVE.

Applicationfiled February 13, 192.5. Serial m5. -s,s s s.

To whom it may concern:

Be it known that GEORGE H. LEN voN, a citizen of the United States, residing at Baltimore, in the State of Maryland, has

. the base and wick-burner,the cylinder bemg thus hinged near its bottom so it may be swung backand permit access to the burner and oil fount. I

These oil-heating stoves usually have a spring latch to engagethe cylinder andhold it in thevertical position over the burner and base, and awire handle or bail is usually provided at the upper end of the cylinder for lifting the heater from place to place. I

To tilt these cylinders backwardly, it is first necessary to press the spring latch to release the cylinder and then grasp some part of the cylinder or the handle to move the cylinder.

While it is possible to effect these two operations with one hand it is not always convenient to .do so, particularly if the cylinder is hot but in any event the two operations are separate and distinct and both must be performed to move'the cylinder from over the burner and base.

The object of this invention therefore is to provide a combined latch releasing and cylinderoperating devicewhereby the latch may be released and the cylinder moved-in a single movement and with one finger if desired.

The invention is illustrated in the 3.000111? panying drawing, whereimw V i i Fig. 1. shows an oil stove in front elevation to which myimproved device is attached. a I r Fig. 2. illustrates an enlarged vertical sectional detail through the lower part'o'f the stove. r

Fig, 3; shows a portion of the stove in side elevation to illustrate the latch release device at one side and the hinge device diametrically opposite the latch.

Fig. 4:. illustrates in perspective the flared flange about the lower end of the cylinder and shows the slot therein for the reception of the latclrrelease device.

Fig. 5 shows the detached releasing lever in perspective. r v I v Fig. G illustrate's a sectional detail taken on the line 66 of Fig; 2 for the purpose of showing iowth'e lower end of the latch-bar is held in a slot in the base, and

- Fig. 7. showsa vertical sectional detail through the flange around the base of the cylinder as the same would appear if viewed on the line 7' 7 of Fig. 2. I

In the drawingthe numeral 10 designates thebase of the "portable stove from which a base-cylinder 11,extends vertically. It is in this base and base-cylinder that the usual oil fount with its burner and wick devices issusta ined, but these play no part in the particular improvements herein claimed and they are therefore not developed or shown the drawing.

An upper cylinder 12, is, as usual, supported on the base-cylinder 1 1,'said upper cylinder having a fiaringornamental flange 18, around 'its lower end which seats on top and projectsover the upper rim edge 14 of thebase-cylinder. I This ornamental cylinder flange 13 is pivotally connected to the base-cylinder by a hinge 15, as shown in Fig. 3, whereby the entire upper cylinder'may be swung back to completely uncover the top of the lower base-cylinder so that access to the oil tount and burner enclosed in the base may be gained, i l V i N. 1., A C RPOR O 033 N W At the top of the upper cylinder 12, there is a wire handle 16 by which the stove may be lifted or carried about from place to place.

In practice it is oonnnon to provide a slot 17, in the ornamental flange 18 through which one may look down on the indicator of the oil-fount to ascertain the amount of oil in the latter.

As the upper cylinder 12 is pivoted or hinged at 15 to the lower cylinder, it is necessary to provide a latch device that will hold the two cylinders in their vertical relation when the stove is in use or is lifted or moved from one place to another.

Heretofore an ordinary spring latch-linger has been provided in the lower cylinder so as to project through a slot in the flange 13, of the upper cylinder and by springing outwardly on the upper side of the flange-slot hold the upper and lower cylinders in ver tical relation.

This ordinary form of latch-finger re quired a person to press the latch back, and then move the cylinder after the latch had been released, thus requiring two operations, and frequently both'hands, to release the latch and tilt the upper cylinder back.

To avoid this double operation, and to simplify the release of the latch and movement of the upper cylinder, is the object of the present invention, as will now be described. I

Extending "vertically in the lower cylinder 11 and close to the annular wall thereof, as clearly shown in Fig.2 of the drawing, there is a latch-bar 18 whose lower end is notched at opposite sides-to produce a narrower central lug 19 and'this lug projects through a slot 20 that is provided in an annular bottom plate 21 of the base. The lower projecting-end 22 of the latch-bar is bent laterally to prevent its withdrawal up through the slot 20 while the entire weight of the latch-bar rests upon said plate 21 where the shoulders 23 are formed as the result of the two side notches, as can be seen in the detail shown in Fig. 6 of the drawing.

A keeper or guide-bracket 24: is attached to the inner side of the lower cylinder 11 near the upper rim-edge thereof and the latch-bar 18, extends freely through this keeper which latter merely serves as a guide to hold the latch-bar against lateral displacement,-the keeper however plays no part in'holding the latch-bar in its engaged position as will presently be more clearly understood.

The upper end of the latch-bar 18 pro jects above the upper edge 14; of the lower cylinder and is'turned or folded downwardly whereby to produce a hook-shaped catch 25.

The latch-bar 18 therefore is sustained by its lower end on which it may rock or swing within the limits permitted by the guide or keeper-bracket.

As hereinbefore stated, the upper cylinder 12 is hinged at 15, to the lower cylinder in order that its flaring flange 13, may seat over and encircle the upper edge 14, of the lower cylinder.

The flaring flange 18 is therefore provided with a slot 26 through which the upper catch-end 25 of the latch-bar will project when the upper cylinder is seated on the lower cylinder and when thus seated, the lower edge of the catch may be moved outwardly so as to project over the front-edge 27 of the flange-slot 26, as shown in Fig. 2 of the drawing- In carrying out my invention I provide means for positively actuating the latch-bar to move it to the latching or to the unlatching position and this means will therefore now be explained.

- When producing the slot 26in the flange l 13 of the upper cylinder, 1 provide downturned lugs 28 at opposite sides of the slot.

Over the slot 26 and conforming to the contour of the flange 13, I provide a latch actuating-lever'29. This lever has an upwardly-curving upper end 30 and also has down-turned side lugs 31 at opposite sides thereof and near said upper end. These lugs extend down into the slot 26 of the flange 18, and have position at thesides of the lugs 28 on the flange so that a pintle pin 32, may be passed through all the lugs and thus pivotally sustain thelatch lever 29.

The'lower end of the latchelever 29 ex tends below the lower edge of the flange 13 and has a finger-loop or coil 33 therein and from the pivot lugs 31 to this end is so much greater than the distance from said lugs to the upper end 30 that a preponderance of weight on the lower end will keep the lever seated on the said flange 18. i

A slot 34: is provided in the latch operating-lever but is so, locatedtherein that the forward edge 35 of this slot will have position forward of the front edge 27 of the slot 26 in the flange 13,in other words the flange-edge 27 under-laps the forward edge 35 of the latch-lever as is shown in Fig. 2 of the drawing.

By reference to Fig. 2 of the drawing, it will be seen that thecatch-end 25 of the latch-bar also projects through the slot 3 1 of the latch-lever but that said catch does not project over or engage said lever but merely has its upper end extending through the said slot. It will also be notedhowever, that the slot 3 1 of the latch operating-lever is of such width between its front edge 35 and its rear edge 36 as to almost snugly fit over the catch-end 25 of the latch-bar. This ensures that the said rear edge 36 of the latch-lever slot will be sufliciently close to the rear side of the latchelever as to prevent the latter from swinging backwardly and accidentally disengaging the forward edge 27 of the slot 26 in flange 13.

Presuming the upper cylinder to be held by the latch as in F ig; 2, the operation of releasing and moving the upper cylinder is as follows:

The loop or coil 33 of the latch operatinglever may be engaged by one finger and swung outwardly and at the same time upwardly. This outward and upward movement of the lever causes the front edge 35 of the slot 34 in the lever to swing upwardly and rearwardly thus engaging the front face of the catch 25.

Obviously, as the front edge 35 of the lever-slot moves upwardly and rearwardly, the rear edge 36 of the same slot will also swing up and rearwardly,.the pivot 32 being the center from which the two slotedges are swung.

This upward and rearward movement of the two slot edges 3536 causes the catch end of the latch-bar to swing inwardly and thus become disengaged from the edge 27 of the flange 13. I

The upward movement of the lower en of the lever is permitted because the upper end of said lever is curved upward and therefore may swing downwardly as the lower end is raised.

When however, the curved upper end 30 of the actuating lever moves down into engagement with the flange 13 at the rear of the slot 26, then independent movement of the latch operatingdever will be stopped and further upward movement of the lever will cause the entire upper cylinder to tilt back on the hinge 15 and cause the flange 13 to withdraw entirely from over .the latch-bar.

Thus it will be seen that by the one lifting n'iovement, the lever 29 will first make a preliminary independent move to push the catch to a released position and a further movement thereof will tilt the upper cylinder, so that by a single operation and with one linger the catch may be released and the cylinder tilted.

Upon returning the cylinder the latch will simply pass through the slot 26 while the lever 29 will rock to allow the catch-end to pass through the slot 34, but after passing therethrough, the rear wall or edge 36 will engage the rear of the latch-bar and press the same forward until its catch overhangs the front edge 27 of the flange slot 26, and again lock the upper cylinder in place.

Having described my invention, claim 1. In an oil stove the combination with a base of a cylinder normally seated over the base, hinge means at one side of the cylinder for pivotally sustaining it with respect to the base, a latch normally engaging a part carried by the cylinder to hold the latter against swinging movement with respect to the base, and an operating lever independent of' the latch and pivotallyattached to a part of the cylinder so as to have a partial movement independent of the cylinder and a further movement with the cylinder said operating lever having position adjacent to the latch'and engaging the latter to release it upon its preliminary partial movement.

2. In an oil stove the combination with a base having a. cylinder, of an upper cylinder having a flange around its lower end which normally seats over the base-cylinder, hinge means for pivotally connecting the upper and lower cylinders, a movable latch on the lowercylinder and normally engaging the flange on the upper cylinder to hold the latter against swinging, and an operating lever independent of the latch and pivoted with respect to the flange of the uppercylinder so as to have a limited movement with respect thereto said operating-lever having an edgeto engage and move said latch while its said limited movement is being made. I

3. In an oil stove the combination with a base having a cylinder, of a movable latch attached to and projecting from said lower cylinder, an upper cylinder having a flange around its lower end to seat over the basecylinder said flange being provided with a slot through which the said latch projects to engage the flange and hold said uppercylinder in place, means for pivotally connecting the upper and lower cylinders, and an actuating lever independentof the latch and connected to the flangeof the upper cylinder said actuating lever having anedge to engage and release the latch as said lever is moved.

4. In an oil stove the combination with av base having a cylinder, of a movable'latch attached to and projecting from said lower cylinder, an upper cylinder having a flange around its lower end to seat over the basecylinder said flange being provided with a slot through which the said latch projects to engage the flange, means for pivotally connecting the upper cylinder with the basecylinder, and a lever device pivotally attached to the flange of the upper cylinder and having a slot to receive the upper end of the latch whereby to move the latch and to aid in swinging the upper cylinder.

5. In an oil stove the combination with a base having a cylinder, of a movable latch in the base-cylinder and projecting above the latter, an upper cylinder having a bot tom flange to seat over the base-cylinder said flange being provided with a slot through which the end of the latch projects whereby the latch may engage said flange and hold the upper cylinder from tilting, means for h g g he upper cylinder so it can swing With respect to the base-cylinder, a lever pivoted to the flange 0f the upper cylinder and extending over the slot in the latter said lever also having a slot therein Whose rear edge has position at the rear of the latch and Whose front edge confronts the front of the said latch,the front edge of the lever-slot being spaced from and forward of the front edge of the flange-slot whereby prelii'ninary upward movement of 10 the lever will push the latch back over the flange-slot and further upward movement of the lever will tilt the upper cylinder on its hinge.

In testimony whereof he aflixes his signature.

GEORGE H. LENNON.

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